PMID- 8622046 OWN - NLM STAT- MEDLINE DCOM- 19960620 LR - 20170210 IS - 0732-183X (Print) IS - 0732-183X (Linking) VI - 14 IP - 3 DP - 1996 Mar TI - Detection of the t(14;18) chromosomal translocation by interphase cytogenetics with yeast-artificial-chromosome probes in follicular lymphoma and nonneoplastic lymphoproliferation. PG - 963-9 AB - PURPOSE: The aim of this study was to establish a fluorescence in situ hybridization (FISH) technique for the detection of t(14;18)(q32;q21), characteristic for follicular lymphoma (Kiel classification: centroblastic centrocytic [cb-cc] lymphoma). MATERIALS AND METHODS: After the FISH system had been established, parallel studies of lymph node biopsy specimens from 30 patients with cb-cc lymphoma and from 32 patients with nonneoplastic lymphoproliferation were performed by means of chromosome analysis, polymerase chain reaction (PCR), and FISH analysis. Two differently labeled yeast-artificial-chromosome (YAC) probes that contained the entire bcl-2 gene and the C-region of the immunoglobulin H (IgH) gene, respectively, were used to detect t(14;18) by FISH. RESULTS: The presence of the translocation is indicated by a red (Cy3)/green (fluorescien isothiocyanate [FITC]) double signal, which corresponds to the IgH/bcl-2 fusion gene, whereas in normal cells the signals are separate. Control studies showed that the double signal is visible in less than 1% of normal cells. FISH analysis was able to identify the t(14;18) in all cases of cb-cc lymphoma we studied. All bcl-2 breakpoints can be detected. Combined immunophenotyping and interphase cytogenetics demonstrated that t(14;18) was restricted to CD22+ B lymphocytes and never occurred in CD3+ T lymphocytes. In four of 32 cases of nonneoplastic lymphoproliferation, t(14;18) was also detected. CONCLUSION: FISH turned out to be the most sensitive method to detect t(14;18). Our FISH results confirm PCR data from other groups that found evidence for the presence of t(14;18) in nonneoplastic lymphoproliferation. It needs to be determined whether, in morphologically nonneoplastic processes, t(14;18) is associated with an increased risk for the development of non-Hodgkin's lymphoma. FAU - Poetsch, M AU - Poetsch M AD - Department of Human Genetics, University of Kiel, Germany. FAU - Weber-Matthiesen, K AU - Weber-Matthiesen K FAU - Plendl, H J AU - Plendl HJ FAU - Grote, W AU - Grote W FAU - Schlegelberger, B AU - Schlegelberger B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Oncol JT - Journal of clinical oncology : official journal of the American Society of Clinical Oncology JID - 8309333 RN - 0 (DNA Probes) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - B-Lymphocytes MH - Chromosomes, Artificial, Yeast/*genetics MH - Chromosomes, Human, Pair 14/*genetics MH - Chromosomes, Human, Pair 18/*genetics MH - DNA Probes/genetics MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase MH - Lymphoma, Follicular/*genetics/pathology MH - Lymphoproliferative Disorders/genetics MH - Male MH - Middle Aged MH - Translocation, Genetic/*genetics EDAT- 1996/03/01 00:00 MHDA- 1996/03/01 00:01 CRDT- 1996/03/01 00:00 PHST- 1996/03/01 00:00 [pubmed] PHST- 1996/03/01 00:01 [medline] PHST- 1996/03/01 00:00 [entrez] AID - 10.1200/JCO.1996.14.3.963 [doi] PST - ppublish SO - J Clin Oncol. 1996 Mar;14(3):963-9. doi: 10.1200/JCO.1996.14.3.963.